qemu: Support input model=virtio-{non-}transitional

Add <input> model handling for virtio transitional devices. Ex:

  <input type='passthrough' bus='virtio' model='virtio-transitional'>
    ...
  </input>

* "virtio-transitional" maps to qemu "virtio-input-host-pci-transitional"
* "virtio-non-transitional" maps to qemu "virtio-input-host-non-transitional"

Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>

src/qemu/qemu_command.c

@@ -512,8 +512,14 @@ qemuBuildVirtioDevStr(virBufferPtr buf,
             has_ntmodel = device.data.vsock->model == VIR_DOMAIN_VSOCK_MODEL_VIRTIO_NON_TRANSITIONAL;
             break;
 
-        case VIR_DOMAIN_DEVICE_LEASE:
         case VIR_DOMAIN_DEVICE_INPUT:
+            if (device.data.input->type != VIR_DOMAIN_INPUT_TYPE_PASSTHROUGH)
+                return 0;
+            has_tmodel = device.data.input->model == VIR_DOMAIN_INPUT_MODEL_VIRTIO_TRANSITIONAL;
+            has_ntmodel = device.data.input->model == VIR_DOMAIN_INPUT_MODEL_VIRTIO_NON_TRANSITIONAL;
+            break;
+
+        case VIR_DOMAIN_DEVICE_LEASE:
         case VIR_DOMAIN_DEVICE_SOUND:
         case VIR_DOMAIN_DEVICE_VIDEO:
         case VIR_DOMAIN_DEVICE_WATCHDOG:

src/qemu/qemu_domain_address.c

@@ -946,7 +946,18 @@ qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,
     case VIR_DOMAIN_DEVICE_INPUT:
         switch ((virDomainInputBus) dev->data.input->bus) {
         case VIR_DOMAIN_INPUT_BUS_VIRTIO:
-            return virtioFlags;
+            switch ((virDomainInputModel) dev->data.input->model) {
+            case VIR_DOMAIN_INPUT_MODEL_VIRTIO_TRANSITIONAL:
+                /* Transitional devices only work in conventional PCI slots */
+                return pciFlags;
+            case VIR_DOMAIN_INPUT_MODEL_VIRTIO:
+            case VIR_DOMAIN_INPUT_MODEL_VIRTIO_NON_TRANSITIONAL:
+            case VIR_DOMAIN_INPUT_MODEL_DEFAULT:
+                return virtioFlags;
+            case VIR_DOMAIN_INPUT_MODEL_LAST:
+                break;
+            }
+            return 0;
 
         case VIR_DOMAIN_INPUT_BUS_PS2:
         case VIR_DOMAIN_INPUT_BUS_USB:

tests/qemuxml2argvdata/virtio-non-transitional.x86_64-3.1.0.args

@@ -42,8 +42,8 @@ fsdev=fsdev-fs0,mount_tag=fs1,bus=pci.1,addr=0x0 \
 -netdev user,id=hostnet0 \
 -device virtio-net-pci,disable-legacy=on,disable-modern=off,netdev=hostnet0,\
 id=net0,mac=00:11:22:33:44:55,bus=pci.2,addr=0x0 \
--device virtio-input-host-pci,id=input0,evdev=/dev/input/event1234,bus=pci.7,\
-addr=0x0 \
+-device virtio-input-host-pci,disable-legacy=on,disable-modern=off,id=input0,\
+evdev=/dev/input/event1234,bus=pci.7,addr=0x0 \
 -device vhost-scsi-pci,disable-legacy=on,disable-modern=off,\
 wwpn=naa.5123456789abcde0,vhostfd=3,id=hostdev0,bus=pci.4,addr=0x0 \
 -device virtio-balloon-pci,disable-legacy=on,disable-modern=off,id=balloon0,\

tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args

@@ -42,8 +42,8 @@ bus=pci.1,addr=0x0 \
 -netdev user,id=hostnet0 \
 -device virtio-net-pci-non-transitional,netdev=hostnet0,id=net0,\
 mac=00:11:22:33:44:55,bus=pci.2,addr=0x0 \
--device virtio-input-host-pci,id=input0,evdev=/dev/input/event1234,bus=pci.7,\
-addr=0x0 \
+-device virtio-input-host-pci-non-transitional,id=input0,\
+evdev=/dev/input/event1234,bus=pci.7,addr=0x0 \
 -device vhost-scsi-pci-non-transitional,wwpn=naa.5123456789abcde0,vhostfd=3,\
 id=hostdev0,bus=pci.4,addr=0x0 \
 -device virtio-balloon-pci-non-transitional,id=balloon0,bus=pci.5,addr=0x0 \

tests/qemuxml2argvdata/virtio-transitional.x86_64-3.1.0.args

@@ -27,7 +27,6 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 addr=0x1 \
 -device pcie-pci-bridge,id=pci.2,bus=pci.1,addr=0x0 \
 -device pcie-root-port,port=0x9,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x1 \
--device pcie-root-port,port=0xa,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x2 \
 -drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
 -device virtio-blk-pci,disable-legacy=off,disable-modern=off,scsi=off,\
 bus=pci.2,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
@@ -37,8 +36,8 @@ fsdev=fsdev-fs0,mount_tag=fs1,bus=pci.2,addr=0x1 \
 -netdev user,id=hostnet0 \
 -device virtio-net-pci,disable-legacy=off,disable-modern=off,netdev=hostnet0,\
 id=net0,mac=00:11:22:33:44:55,bus=pci.2,addr=0x2 \
--device virtio-input-host-pci,id=input0,evdev=/dev/input/event1234,bus=pci.3,\
-addr=0x0 \
+-device virtio-input-host-pci,disable-legacy=off,disable-modern=off,id=input0,\
+evdev=/dev/input/event1234,bus=pci.2,addr=0x7 \
 -device vhost-scsi-pci,disable-legacy=off,disable-modern=off,\
 wwpn=naa.5123456789abcde0,vhostfd=3,id=hostdev0,bus=pci.2,addr=0x4 \
 -device virtio-balloon-pci,disable-legacy=off,disable-modern=off,id=balloon0,\
@@ -49,5 +48,5 @@ id=rng0,bus=pci.2,addr=0x6 \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
 resourcecontrol=deny \
 -device vhost-vsock-pci,disable-legacy=off,disable-modern=off,id=vsock0,\
-guest-cid=4,vhostfd=6789,bus=pci.2,addr=0x7 \
+guest-cid=4,vhostfd=6789,bus=pci.2,addr=0x8 \
 -msg timestamp=on

tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args

@@ -27,7 +27,6 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 addr=0x1 \
 -device pcie-pci-bridge,id=pci.2,bus=pci.1,addr=0x0 \
 -device pcie-root-port,port=0x9,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x1 \
--device pcie-root-port,port=0xa,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x2 \
 -drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
 -device virtio-blk-pci-transitional,scsi=off,bus=pci.2,addr=0x3,\
 drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
@@ -37,8 +36,8 @@ bus=pci.2,addr=0x1 \
 -netdev user,id=hostnet0 \
 -device virtio-net-pci-transitional,netdev=hostnet0,id=net0,\
 mac=00:11:22:33:44:55,bus=pci.2,addr=0x2 \
--device virtio-input-host-pci,id=input0,evdev=/dev/input/event1234,bus=pci.3,\
-addr=0x0 \
+-device virtio-input-host-pci-transitional,id=input0,\
+evdev=/dev/input/event1234,bus=pci.2,addr=0x7 \
 -device vhost-scsi-pci-transitional,wwpn=naa.5123456789abcde0,vhostfd=3,\
 id=hostdev0,bus=pci.2,addr=0x4 \
 -device virtio-balloon-pci-transitional,id=balloon0,bus=pci.2,addr=0x5 \
@@ -47,5 +46,5 @@ id=hostdev0,bus=pci.2,addr=0x4 \
 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,\
 resourcecontrol=deny \
 -device vhost-vsock-pci-transitional,id=vsock0,guest-cid=4,vhostfd=6789,\
-bus=pci.2,addr=0x7 \
+bus=pci.2,addr=0x8 \
 -msg timestamp=on

tests/qemuxml2xmloutdata/virtio-transitional.xml

@@ -39,11 +39,6 @@
       <target chassis='3' port='0x9'/>
       <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
     </controller>
-    <controller type='pci' index='4' model='pcie-root-port'>
-      <model name='pcie-root-port'/>
-      <target chassis='4' port='0xa'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
-    </controller>
     <filesystem type='mount' accessmode='passthrough' model='virtio-transitional'>
       <source dir='/export/fs1'/>
       <target dir='fs1'/>
@@ -56,7 +51,7 @@
     </interface>
     <input type='passthrough' bus='virtio' model='virtio-transitional'>
       <source evdev='/dev/input/event1234'/>
-      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x07' function='0x0'/>
     </input>
     <input type='mouse' bus='ps2'/>
     <input type='keyboard' bus='ps2'/>
@@ -73,7 +68,7 @@
     </rng>
     <vsock model='virtio-transitional'>
       <cid auto='no' address='4'/>
-      <address type='pci' domain='0x0000' bus='0x02' slot='0x07' function='0x0'/>
+      <address type='pci' domain='0x0000' bus='0x02' slot='0x08' function='0x0'/>
     </vsock>
   </devices>
 </domain>